mrmBot-Matrix/natives/circle.cc

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#include <Magick++.h>
#include <cstring>
#include <iostream>
#include <list>
#include <map>
#include <string>
#include "common.h"
using namespace std;
using namespace Magick;
ArgumentMap Circle(string type, string *outType, char *BufferData,
size_t BufferLength, [[maybe_unused]] ArgumentMap Arguments,
size_t *DataSize) {
Blob blob;
list<Image> frames;
list<Image> coalesced;
list<Image> blurred;
try {
readImages(&frames, Blob(BufferData, BufferLength));
} catch (Magick::WarningCoder &warning) {
cerr << "Coder Warning: " << warning.what() << endl;
} catch (Magick::Warning &warning) {
cerr << "Warning: " << warning.what() << endl;
}
coalesceImages(&coalesced, frames.begin(), frames.end());
for (Image &image : coalesced) {
image.rotationalBlur(10);
image.magick(*outType);
blurred.push_back(image);
}
optimizeTransparency(blurred.begin(), blurred.end());
if (*outType == "gif") {
for (Image &image : blurred) {
image.quantizeDitherMethod(FloydSteinbergDitherMethod);
image.quantize();
}
}
writeImages(blurred.begin(), blurred.end(), &blob);
*DataSize = blob.length();
// workaround because the data is tied to the blob
char *data = (char *)malloc(*DataSize);
memcpy(data, blob.data(), *DataSize);
ArgumentMap output;
output["buf"] = data;
output["width"] = (int)blurred.front().columns();
output["height"] = (int)blurred.front().rows();
return output;
}